<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
<meta name="viewport" content="width=device-width">
<meta name="theme-color" content="#222"><meta name="generator" content="Hexo 6.3.0">

  <link rel="apple-touch-icon" sizes="180x180" href="/images/apple-touch-icon-next.png">
  <link rel="icon" type="image/png" sizes="32x32" href="/images/favicon-32x32-next.png">
  <link rel="icon" type="image/png" sizes="16x16" href="/images/favicon-16x16-next.png">
  <link rel="mask-icon" href="/images/logo.svg" color="#222">

<link rel="stylesheet" href="/css/main.css">



<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.2.1/css/all.min.css" integrity="sha256-Z1K5uhUaJXA7Ll0XrZ/0JhX4lAtZFpT6jkKrEDT0drU=" crossorigin="anonymous">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.1.1/animate.min.css" integrity="sha256-PR7ttpcvz8qrF57fur/yAx1qXMFJeJFiA6pSzWi0OIE=" crossorigin="anonymous">

<script class="next-config" data-name="main" type="application/json">{"hostname":"example.com","root":"/","images":"/images","scheme":"Muse","darkmode":false,"version":"8.14.1","exturl":false,"sidebar":{"position":"left","display":"post","padding":18,"offset":12},"copycode":{"enable":false,"style":null},"bookmark":{"enable":false,"color":"#222","save":"auto"},"mediumzoom":false,"lazyload":false,"pangu":false,"comments":{"style":"tabs","active":null,"storage":true,"lazyload":false,"nav":null},"stickytabs":false,"motion":{"enable":true,"async":false,"transition":{"menu_item":"fadeInDown","post_block":"fadeIn","post_header":"fadeInDown","post_body":"fadeInDown","coll_header":"fadeInLeft","sidebar":"fadeInUp"}},"prism":false,"i18n":{"placeholder":"搜索...","empty":"没有找到任何搜索结果：${query}","hits_time":"找到 ${hits} 个搜索结果（用时 ${time} 毫秒）","hits":"找到 ${hits} 个搜索结果"},"path":"/search.xml","localsearch":{"enable":true,"trigger":"auto","top_n_per_article":-1,"unescape":false,"preload":false}}</script><script src="/js/config.js"></script>

    <meta name="description" content="UUID优点：  生成足够简单，本地生成无网络消耗，具有唯一性  缺点：  无序的字符串，不具备趋势自增特性 没有具体的业务含义 长度过长16 字节128位，36位长度的字符串，存储以及查询对MySQL的性能消耗较大，MySQL官方明确建议主键要尽量越短越好，作为数据库主键 UUID 的无序性会导致数据位置频繁变动，严重影响性能。  Snowflake——雪花算法雪花算法（Snowflake）是t">
<meta property="og:type" content="article">
<meta property="og:title" content="分布式ID">
<meta property="og:url" content="http://example.com/2022/09/28/%E5%88%86%E5%B8%83%E5%BC%8FID/index.html">
<meta property="og:site_name" content="JsyBlog">
<meta property="og:description" content="UUID优点：  生成足够简单，本地生成无网络消耗，具有唯一性  缺点：  无序的字符串，不具备趋势自增特性 没有具体的业务含义 长度过长16 字节128位，36位长度的字符串，存储以及查询对MySQL的性能消耗较大，MySQL官方明确建议主键要尽量越短越好，作为数据库主键 UUID 的无序性会导致数据位置频繁变动，严重影响性能。  Snowflake——雪花算法雪花算法（Snowflake）是t">
<meta property="og:locale" content="zh_CN">
<meta property="og:image" content="https://pic2.zhimg.com/80/v2-4f51c7b6704323cc376b5a8a9a7cad09_1440w.jpg">
<meta property="og:image" content="https://pic3.zhimg.com/80/v2-abc2633c6ff85daf95fca018f717a24e_1440w.png">
<meta property="article:published_time" content="2022-09-28T02:48:10.000Z">
<meta property="article:modified_time" content="2022-10-08T17:16:03.185Z">
<meta property="article:author" content="SongyangJi">
<meta name="twitter:card" content="summary">
<meta name="twitter:image" content="https://pic2.zhimg.com/80/v2-4f51c7b6704323cc376b5a8a9a7cad09_1440w.jpg">


<link rel="canonical" href="http://example.com/2022/09/28/%E5%88%86%E5%B8%83%E5%BC%8FID/">



<script class="next-config" data-name="page" type="application/json">{"sidebar":"","isHome":false,"isPost":true,"lang":"zh-CN","comments":true,"permalink":"http://example.com/2022/09/28/%E5%88%86%E5%B8%83%E5%BC%8FID/","path":"2022/09/28/分布式ID/","title":"分布式ID"}</script>

<script class="next-config" data-name="calendar" type="application/json">""</script>
<title>分布式ID | JsyBlog</title>
  








  <noscript>
    <link rel="stylesheet" href="/css/noscript.css">
  </noscript>
</head>

<body itemscope itemtype="http://schema.org/WebPage" class="use-motion">
  <div class="headband"></div>

  <main class="main">
    <div class="column">
      <header class="header" itemscope itemtype="http://schema.org/WPHeader"><div class="site-brand-container">
  <div class="site-nav-toggle">
    <div class="toggle" aria-label="切换导航栏" role="button">
        <span class="toggle-line"></span>
        <span class="toggle-line"></span>
        <span class="toggle-line"></span>
    </div>
  </div>

  <div class="site-meta">

    <a href="/" class="brand" rel="start">
      <i class="logo-line"></i>
      <p class="site-title">JsyBlog</p>
      <i class="logo-line"></i>
    </a>
  </div>

  <div class="site-nav-right">
    <div class="toggle popup-trigger" aria-label="搜索" role="button">
        <i class="fa fa-search fa-fw fa-lg"></i>
    </div>
  </div>
</div>



<nav class="site-nav">
  <ul class="main-menu menu"><li class="menu-item menu-item-home"><a href="/" rel="section"><i class="fa fa-home fa-fw"></i>首页</a></li><li class="menu-item menu-item-tags"><a href="/tags/" rel="section"><i class="fa fa-tags fa-fw"></i>标签</a></li><li class="menu-item menu-item-categories"><a href="/categories/" rel="section"><i class="fa fa-th fa-fw"></i>分类</a></li><li class="menu-item menu-item-archives"><a href="/archives/" rel="section"><i class="fa fa-archive fa-fw"></i>归档</a></li>
      <li class="menu-item menu-item-search">
        <a role="button" class="popup-trigger"><i class="fa fa-search fa-fw"></i>搜索
        </a>
      </li>
  </ul>
</nav>



  <div class="search-pop-overlay">
    <div class="popup search-popup"><div class="search-header">
  <span class="search-icon">
    <i class="fa fa-search"></i>
  </span>
  <div class="search-input-container">
    <input autocomplete="off" autocapitalize="off" maxlength="80"
           placeholder="搜索..." spellcheck="false"
           type="search" class="search-input">
  </div>
  <span class="popup-btn-close" role="button">
    <i class="fa fa-times-circle"></i>
  </span>
</div>
<div class="search-result-container no-result">
  <div class="search-result-icon">
    <i class="fa fa-spinner fa-pulse fa-5x"></i>
  </div>
</div>

    </div>
  </div>

</header>
        
  
  <aside class="sidebar">

    <div class="sidebar-inner sidebar-nav-active sidebar-toc-active">
      <ul class="sidebar-nav">
        <li class="sidebar-nav-toc">
          文章目录
        </li>
        <li class="sidebar-nav-overview">
          站点概览
        </li>
      </ul>

      <div class="sidebar-panel-container">
        <!--noindex-->
        <div class="post-toc-wrap sidebar-panel">
            <div class="post-toc animated"><ol class="nav"><li class="nav-item nav-level-1"><a class="nav-link" href="#UUID"><span class="nav-number">1.</span> <span class="nav-text">UUID</span></a></li><li class="nav-item nav-level-1"><a class="nav-link" href="#Snowflake%E2%80%94%E2%80%94%E9%9B%AA%E8%8A%B1%E7%AE%97%E6%B3%95"><span class="nav-number">2.</span> <span class="nav-text">Snowflake——雪花算法</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#%E4%BC%98%E7%82%B9"><span class="nav-number">2.1.</span> <span class="nav-text">优点</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#%E7%BC%BA%E7%82%B9"><span class="nav-number">2.2.</span> <span class="nav-text">缺点</span></a></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E5%8F%B7%E6%AE%B5%E6%A8%A1%E5%BC%8F"><span class="nav-number">3.</span> <span class="nav-text">号段模式</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#%E4%BC%98%E7%82%B9-1"><span class="nav-number">3.1.</span> <span class="nav-text">优点</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#%E7%BC%BA%E7%82%B9-1"><span class="nav-number">3.2.</span> <span class="nav-text">缺点</span></a></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E7%BE%8E%E5%9B%A2%EF%BC%88Leaf%EF%BC%89"><span class="nav-number">4.</span> <span class="nav-text">美团（Leaf）</span></a></li></ol></div>
        </div>
        <!--/noindex-->

        <div class="site-overview-wrap sidebar-panel">
          <div class="site-author animated" itemprop="author" itemscope itemtype="http://schema.org/Person">
  <p class="site-author-name" itemprop="name">SongyangJi</p>
  <div class="site-description" itemprop="description"></div>
</div>
<div class="site-state-wrap animated">
  <nav class="site-state">
      <div class="site-state-item site-state-posts">
        <a href="/archives/">
          <span class="site-state-item-count">251</span>
          <span class="site-state-item-name">日志</span>
        </a>
      </div>
      <div class="site-state-item site-state-categories">
          <a href="/categories/">
        <span class="site-state-item-count">45</span>
        <span class="site-state-item-name">分类</span></a>
      </div>
      <div class="site-state-item site-state-tags">
          <a href="/tags/">
        <span class="site-state-item-count">109</span>
        <span class="site-state-item-name">标签</span></a>
      </div>
  </nav>
</div>

        </div>
      </div>
    </div>

    
  </aside>


    </div>

    <div class="main-inner post posts-expand">


  


<div class="post-block">
  
  

  <article itemscope itemtype="http://schema.org/Article" class="post-content" lang="zh-CN">
    <link itemprop="mainEntityOfPage" href="http://example.com/2022/09/28/%E5%88%86%E5%B8%83%E5%BC%8FID/">

    <span hidden itemprop="author" itemscope itemtype="http://schema.org/Person">
      <meta itemprop="image" content="/images/avatar.gif">
      <meta itemprop="name" content="SongyangJi">
    </span>

    <span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
      <meta itemprop="name" content="JsyBlog">
      <meta itemprop="description" content="">
    </span>

    <span hidden itemprop="post" itemscope itemtype="http://schema.org/CreativeWork">
      <meta itemprop="name" content="分布式ID | JsyBlog">
      <meta itemprop="description" content="">
    </span>
      <header class="post-header">
        <h1 class="post-title" itemprop="name headline">
          分布式ID
        </h1>

        <div class="post-meta-container">
          <div class="post-meta">
    <span class="post-meta-item">
      <span class="post-meta-item-icon">
        <i class="far fa-calendar"></i>
      </span>
      <span class="post-meta-item-text">发表于</span>

      <time title="创建时间：2022-09-28 10:48:10" itemprop="dateCreated datePublished" datetime="2022-09-28T10:48:10+08:00">2022-09-28</time>
    </span>
    <span class="post-meta-item">
      <span class="post-meta-item-icon">
        <i class="far fa-calendar-check"></i>
      </span>
      <span class="post-meta-item-text">更新于</span>
      <time title="修改时间：2022-10-09 01:16:03" itemprop="dateModified" datetime="2022-10-09T01:16:03+08:00">2022-10-09</time>
    </span>
    <span class="post-meta-item">
      <span class="post-meta-item-icon">
        <i class="far fa-folder"></i>
      </span>
      <span class="post-meta-item-text">分类于</span>
        <span itemprop="about" itemscope itemtype="http://schema.org/Thing">
          <a href="/categories/%E5%88%86%E5%B8%83%E5%BC%8F/" itemprop="url" rel="index"><span itemprop="name">分布式</span></a>
        </span>
    </span>

  
</div>

        </div>
      </header>

    
    
    
    <div class="post-body" itemprop="articleBody">
        <h1 id="UUID"><a href="#UUID" class="headerlink" title="UUID"></a>UUID</h1><p><strong>优点：</strong></p>
<ul>
<li>生成足够简单，本地生成无网络消耗，具有唯一性</li>
</ul>
<p><strong>缺点：</strong></p>
<ul>
<li>无序的字符串，不具备趋势自增特性</li>
<li>没有具体的业务含义</li>
<li>长度过长16 字节128位，36位长度的字符串，存储以及查询对MySQL的性能消耗较大，MySQL官方明确建议主键要尽量越短越好，作为数据库主键 <code>UUID</code> 的无序性会导致数据位置频繁变动，严重影响性能。</li>
</ul>
<h1 id="Snowflake——雪花算法"><a href="#Snowflake——雪花算法" class="headerlink" title="Snowflake——雪花算法"></a>Snowflake——雪花算法</h1><p>雪花算法（Snowflake）是twitter公司内部分布式项目采用的ID生成算法，开源后广受国内大厂的好评，在该算法影响下各大公司相继开发出各具特色的分布式生成器。</p>
<p><img src="https://pic2.zhimg.com/80/v2-4f51c7b6704323cc376b5a8a9a7cad09_1440w.jpg"></p>
<p><code>Snowflake</code>生成的是Long类型的ID，一个Long类型占8个字节，每个字节占8比特，也就是说一个Long类型占64个比特。</p>
<p>Snowflake ID组成结构：<code>正数位</code>（占1比特）+ <code>时间戳</code>（占41比特）+ <code>机器ID</code>（占5比特）+ <code>数据中心</code>（占5比特）+ <code>自增值</code>（占12比特），总共64比特组成的一个Long类型。</p>
<ul>
<li>第一个bit位（1bit）：Java中long的最高位是符号位代表正负，正数是0，负数是1，一般生成ID都为正数，所以默认为0。</li>
<li>时间戳部分（41bit）：毫秒级的时间，不建议存当前时间戳，而是用（当前时间戳 - 固定开始时间戳）的差值，可以使产生的ID从更小的值开始；41位的时间戳可以使用69年，(1L &lt;&lt; 41) &#x2F; (1000L * 60 * 60 * 24 * 365) &#x3D; 69年</li>
<li>工作机器id（10bit）：也被叫做<code>workId</code>，这个可以灵活配置，机房或者机器号组合都可以。</li>
<li>序列号部分（12bit），自增值支持同一毫秒内同一个节点可以生成4096个ID</li>
</ul>
<p>根据这个算法的逻辑，只需要将这个算法用Java语言实现出来，封装为一个工具方法，那么各个业务应用可以直接使用该工具方法来获取分布式ID，只需保证每个业务应用有自己的工作机器id即可，而不需要单独去搭建一个获取分布式ID的应用。</p>
<h2 id="优点"><a href="#优点" class="headerlink" title="优点"></a>优点</h2><p><strong>效率高</strong><br>生成id的效率比较快，最高在1ms内可以生成2的12次方，也就是4096个id。<br><strong>不依赖其他组件</strong><br>生成id的过程中，主要是根据时间戳，workID，序列号来进行生成，可以做到不额外依赖其他组件，只依赖于本地系统时间独立地生成id。</p>
<h2 id="缺点"><a href="#缺点" class="headerlink" title="缺点"></a>缺点</h2><p><strong>易造成数据倾斜的问题</strong><br>举例：一个数据库中总共有10个id，分别是</p>
<p>0，25，26，27，28，29，30，31，32，100</p>
<p>id的最小值是0，最大值是100，按照id最大值减去最小值，进行范围切分，分成四段的话，范围是以下四个范围：</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"> </span><br><span class="line">[``0``,``25``), 存在``1``个id，值分别是``0` `[``25``,``50``) 存在``8``个id，值分别是``25``，``26``，``27``，``28``，``29``，``30``，``31``，``32` `[``50``,``75``),存在``0``个id [``75``,``100``] 存在``1``个``100``，值是``100</span><br></pre></td></tr></table></figure>

<p>这样明显就会存在数据倾斜的问题，就是[25,50) 这个区间存在的id数量特别多，而其他区间存在的id数量特别少。如果我们用Sqoop将MySQL中的数据导入到Hive中去时，就是按照这种id最大值减去最小值，进行范围切分实现方法进行数据分片，然后多线程进行数据导入，每个线程负责一个分片的数据，数据不均匀的话，导入的时间就会变长，有些线程分配的数据量少，导入很快，有些线程分配的数据量大导入很慢。总导入时间取决于最慢的那个线程的时间。</p>
<p>使用Snowflake生成的id，id值的大小因为取决于生成id时的时间戳，如果某一个时间段爬取了大量文章进行入库，在很短的时候内生成了很多id，而其他时间段生成id数量很少，在使用Sqoop导入数据时就会有数据倾斜的问题，需要单独自己进行数据切分，让数据变均匀，然后进行导入。</p>
<h1 id="号段模式"><a href="#号段模式" class="headerlink" title="号段模式"></a>号段模式</h1><p>号段模式是当下分布式ID生成器的主流实现方式之一，号段模式可以理解为<strong>从数据库批量的获取自增ID</strong>，每次从数据库取出一个号段范围，例如 [0,1000) 代表1000个ID，具体的业务服务将本号段，生成1~1000的自增ID并加载到内存。</p>
<p>表结构如下：</p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">CREATE</span> <span class="keyword">TABLE</span> id_generator (</span><br><span class="line">  id <span class="type">int</span>(<span class="number">10</span>) <span class="keyword">NOT</span> <span class="keyword">NULL</span>,</span><br><span class="line">  max_id <span class="type">bigint</span>(<span class="number">20</span>) <span class="keyword">NOT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;当前最大id&#x27;</span>,</span><br><span class="line">  step <span class="type">int</span>(<span class="number">20</span>) <span class="keyword">NOT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;号段的布长&#x27;</span>,</span><br><span class="line">  biz_type	<span class="type">int</span>(<span class="number">20</span>) <span class="keyword">NOT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;业务类型&#x27;</span>,</span><br><span class="line">  version <span class="type">int</span>(<span class="number">20</span>) <span class="keyword">NOT</span> <span class="keyword">NULL</span> COMMENT <span class="string">&#x27;版本号&#x27;</span>,</span><br><span class="line">  <span class="keyword">PRIMARY</span> KEY (`id`)</span><br><span class="line">) </span><br></pre></td></tr></table></figure>



<p>eg.<br><img src="https://pic3.zhimg.com/80/v2-abc2633c6ff85daf95fca018f717a24e_1440w.png"></p>
<ul>
<li><p>biz_type ：代表不同业务类型；</p>
</li>
<li><p>max_id ：当前最大的可用id；</p>
</li>
<li><p>step ：代表号段的长度；</p>
</li>
<li><p>version ：是一个乐观锁，每次都更新version，保证并发时数据的正确性。</p>
</li>
</ul>
<p>等这批号段ID用完，再次向数据库申请新号段，对<code>max_id</code>字段做一次<code>update</code>操作，<code>update max_id= max_id + step</code>，update成功则说明新号段获取成功，新的号段范围是<code>(max_id ,max_id +step]</code>。</p>
<figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">update</span> id_generator <span class="keyword">set</span> max_id <span class="operator">=</span> #&#123;max_id<span class="operator">+</span>step&#125;, version <span class="operator">=</span> version <span class="operator">+</span> <span class="number">1</span> <span class="keyword">where</span> version <span class="operator">=</span> # &#123;version&#125; <span class="keyword">and</span> biz_type <span class="operator">=</span> XXX</span><br></pre></td></tr></table></figure>





<p>由于多业务端可能同时操作，所以采用版本号<code>version</code>乐观锁方式更新，这种<code>分布式ID</code>生成方式不强依赖于数据库，不会频繁的访问数据库，对数据库的压力小很多。</p>
<h2 id="优点-1"><a href="#优点-1" class="headerlink" title="优点"></a>优点</h2><p><strong>效率高</strong><br>生成id的效率取决于step的大小，不会像主键自增生成id那样再受限于数据库的数量。</p>
<h2 id="缺点-1"><a href="#缺点-1" class="headerlink" title="缺点"></a>缺点</h2><p><strong>强依赖于数据库</strong><br>还是强依赖于数据库，数据库宕机后，虽然id生成系统靠内存中还未使用完id，可以维持系统正常运行一段时间，但是数据库不可用还是会导致整个系统不可用。</p>
<p><strong>id是连续的</strong><br>容易造成被爬取，以及被竞争对手猜测出一天的订单量。</p>
<h1 id="美团（Leaf）"><a href="#美团（Leaf）" class="headerlink" title="美团（Leaf）"></a>美团（Leaf）</h1><p>Leaf同时支持号段模式和snowflake算法模式，可以切换使用。</p>

    </div>

    
    
    

    <footer class="post-footer">

        

          <div class="post-nav">
            <div class="post-nav-item">
                <a href="/2022/09/27/%E9%98%B2%E9%87%8D%E4%B8%8E%E5%B9%82%E7%AD%89/" rel="prev" title="防重与幂等">
                  <i class="fa fa-chevron-left"></i> 防重与幂等
                </a>
            </div>
            <div class="post-nav-item">
                <a href="/2022/09/28/Linux%E7%BD%91%E7%BB%9C%E7%9B%91%E6%8E%A7/" rel="next" title="Linux网络监控">
                  Linux网络监控 <i class="fa fa-chevron-right"></i>
                </a>
            </div>
          </div>
    </footer>
  </article>
</div>






</div>
  </main>

  <footer class="footer">
    <div class="footer-inner">


<div class="copyright">
  &copy; 
  <span itemprop="copyrightYear">2023</span>
  <span class="with-love">
    <i class="fa fa-heart"></i>
  </span>
  <span class="author" itemprop="copyrightHolder">SongyangJi</span>
</div>
  <div class="powered-by">由 <a href="https://hexo.io/" rel="noopener" target="_blank">Hexo</a> & <a href="https://theme-next.js.org/muse/" rel="noopener" target="_blank">NexT.Muse</a> 强力驱动
  </div>

    </div>
  </footer>

  
  <div class="toggle sidebar-toggle" role="button">
    <span class="toggle-line"></span>
    <span class="toggle-line"></span>
    <span class="toggle-line"></span>
  </div>
  <div class="sidebar-dimmer"></div>
  <div class="back-to-top" role="button" aria-label="返回顶部">
    <i class="fa fa-arrow-up fa-lg"></i>
    <span>0%</span>
  </div>

<noscript>
  <div class="noscript-warning">Theme NexT works best with JavaScript enabled</div>
</noscript>


  
  <script src="https://cdnjs.cloudflare.com/ajax/libs/animejs/3.2.1/anime.min.js" integrity="sha256-XL2inqUJaslATFnHdJOi9GfQ60on8Wx1C2H8DYiN1xY=" crossorigin="anonymous"></script>
<script src="/js/comments.js"></script><script src="/js/utils.js"></script><script src="/js/motion.js"></script><script src="/js/schemes/muse.js"></script><script src="/js/next-boot.js"></script>

  <script src="https://cdnjs.cloudflare.com/ajax/libs/hexo-generator-searchdb/1.4.1/search.js" integrity="sha256-1kfA5uHPf65M5cphT2dvymhkuyHPQp5A53EGZOnOLmc=" crossorigin="anonymous"></script>
<script src="/js/third-party/search/local-search.js"></script>





  





</body>
</html>
